<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        .box {
            width: 200px;
            height: 200px;
            background-color: #f00;
            margin: 200px auto;
            
            /*扭曲*/
            -webkit-transform: skew(30deg,50deg);
            -moz-transform: skew(30deg,50deg);
            -ms-transform: skew(30deg,50deg);
            -o-transform: skew(30deg,50deg);
            transform: skew(30deg,50deg);

            /*skew(n) /(x,0)一个参数x轴方向扭曲*/
            -webkit-transform: skew(330deg);
            -moz-transform: skew(330deg);
            -ms-transform: skew(330deg);
            -o-transform: skew(330deg);
            transform: skew(330deg);

            -webkit-transform: skewX(100deg);
            -moz-transform: skewX(100deg);
            -ms-transform: skewX(100deg);
            -o-transform: skewX(100deg);
            transform: skewX(100deg);

            -webkit-transform: skewY(100deg);
            -moz-transform: skewY(100deg);
            -ms-transform: skewY(100deg);
            -o-transform: skewY(100deg);
            transform: skewY(100deg);

            -webkit-transform: skew(100deg,100deg);
            -moz-transform: skew(100deg,100deg);
            -ms-transform: skew(100deg,100deg);
            -o-transform: skew(100deg,100deg);
            transform: skew(100deg,100deg);
        }
    </style>
</head>
<body>
<div class="box"></div>
</body>
</html>